What to Do if the System Crashes

The most important things to remember are:

Write down the system console messages.

If a system crashes, making
it run again might seem like your most pressing concern. However, before you
reboot the system, examine the console screen for messages. These messages
can provide some insight about what caused the crash. Even if the system reboots
automatically and the console messages have disappeared from the screen, you
might be able to check these messages by viewing the system error log, the/var/adm/messages file. For more information about viewing system
error log files, see How to View System Messages.

If you have frequent crashes and can't determine
their cause, gather all the information you can from the system console or
the /var/adm/messages files, and have it ready for a
customer service representative to examine. For a complete list of troubleshooting
information to gather for your service provider, see Troubleshooting a System Crash.